Track Chain for Tracked Vehicles | Component Directory

Product Specifications

Technical details and manufacturing context for Track Chain

Definition

The track chain is the core component of a tracked vehicle's undercarriage system. It consists of a series of interlinked metal plates (links) connected by pins and bushings, forming a continuous loop that wraps around the drive sprocket, idler, and road wheels. Its primary function is to provide a durable, flexible, and high-traction surface for the vehicle to move across various terrains while distributing the vehicle's weight and transmitting driving force. The chain is typically made from alloy steel or manganese steel, offering a balance of strength, wear resistance, and toughness. Key parameters include pitch (101.6–228.6 mm), track width (300–1000 mm), tensile strength (800–1200 MPa), hardness (48–55 HRC), operating temperature (-40–85 °C), weight per meter (50–150 kg/m), bushing diameter (30–80 mm), pin diameter (20–60 mm), track link height (80–200 mm), grouser height (20–60 mm), material grade (e.g., 40CrMnMo–35CrMo), and tolerance on pitch (±0.5 mm). These values are reference ranges and must be verified for the specific model and application. The track chain operates by engaging with the drive sprocket's teeth, circulating around the undercarriage, and providing a continuous road for the vehicle. Proper maintenance, including lubrication and wear inspection, is essential for reliable operation. Always consult the legal manufacturer or supplier to confirm model-specific specifications and applicable standards.

Working Principle

The track chain operates by engaging with the drive sprocket's teeth. As the sprocket rotates, it pulls the chain links, causing the entire loop to circulate around the undercarriage's wheels and rollers. The chain's links make contact with the ground, creating a continuous 'road' for the vehicle. The pins and bushings allow articulation between links, enabling the chain to bend around the sprockets and conform to uneven ground, while maintaining structural integrity under heavy loads.

Common Materials

Alloy Steel, Manganese Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Pitch	101.6–228.6 mm	Determines compatibility with sprocket and ground pressureISO 101
Track Width	300–1000 mm	Wider tracks reduce ground pressure
Tensile Strength	800–1200 MPa	Must withstand peak traction forcesISO 630
Hardness	48–55 HRC	Balances wear resistance and toughnessISO 6508
Operating Temperature	-40–85 °C	Seals and lubricants degrade outside this range
Weight per Meter	50–150 kg/m	Affects vehicle weight and transport logistics
Bushing Diameter	30–80 mm	Critical for pin-bushing wear life
Pin Diameter	20–60 mm	Must match bushing for proper articulation
Track Link Height	80–200 mm	Influences stiffness and ground clearance
Grouser Height	20–60 mm	Higher grousers improve traction but increase wear
Material Grade	40CrMnMo–35CrMo	Alloy steel for strength and hardenabilityGB/T 3077
Tolerance on Pitch	±0.5 mm	Ensures even load distribution and smooth operationISO 286

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Link (Side Plate) Part
Forms the main structural body of the chain, provides the surface for ground contact and sprocket engagement.

Material: Alloy Steel
Pin Part
Connects adjacent links, allows articulation, and transmits load. The ends engage with the drive sprocket.

Material: Case-Hardened Alloy Steel
Bushing Part
A sleeve pressed into the link that the pin rotates within, providing a wear surface to protect the pin and link bores.

Material: Hardened Steel
Seal (O-ring/Gasket) Part
Retains lubrication within the pin/bushing joint and excludes contaminants, extending service life.

Material: Rubber or Synthetic Polymer

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Undercarriage

View system integration details

Manufacturers of Track Chain

Manufacturer profiles associated with Track Chain.

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Frequently Asked Questions

What materials are commonly used for track chains?

Track chains are typically made from alloy steel or manganese steel, as listed in the directory. These materials provide a balance of strength, wear resistance, and toughness. Specific grades, such as 40CrMnMo or 35CrMo, may be used, but the exact material must be confirmed with the manufacturer for the intended application.

How do I select the correct track chain pitch?

The pitch, ranging from 101.6 to 228.6 mm, determines compatibility with the drive sprocket and affects ground pressure. Selection depends on the vehicle's weight, power, and operating conditions. Always verify the required pitch with the vehicle manufacturer or supplier to ensure proper engagement.

What is the significance of track width?

Track width, ranging from 300 to 1000 mm, influences ground pressure. Wider tracks reduce ground pressure, improving flotation on soft soils, but may increase weight and turning resistance. The appropriate width depends on the vehicle's application and terrain.

How should I verify the quality of a track chain?

Verify that the track chain meets the specified parameters such as tensile strength (800–1200 MPa), hardness (48–55 HRC), and tolerance on pitch (±0.5 mm). Check for compliance with relevant standards like ISO 101, ISO 630, ISO 6508, and GB/T 3077. Always request documentation from the supplier and confirm that the values are suitable for your specific model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Not applicable (mechanical load bearing)
other spec:	Max dynamic load: 50 kN per link, Max speed: 15 km/h, Wear life: 2000-5000 hours depending on conditions
temperature:	-40°C to 120°C

Track Chain

Product Specifications

Applied To / Applications

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Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

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